Hi @Faiz Ahmed Mirza ,
How did you modify your master page?
You could try to:
ensure that you have publishing feature enabled and is updating the seatle.html(or whichever is your master page) from SharePoint Designer and update the below html
- remove "style:display:none" from the class "ms-breadcrumb-dropdownBox"
- change Visible ="true" for SharePoint:PopoutMenu
Once you have made these changes , Publish a major version.
Pleaser refer to this post for more information:
how to Enable Breadcrumb in SharePoint 2016
Based on our test it works well:
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